15 citations · 34 across the 13 of their papers we have counts for
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Dirac fermions in non-Hermitian magnetic fields: Zero modes and index theorem
Christopher A. Leong, Bitan Roy
In a Lorentz symmetric non-Hermitian (NH) Dirac theory, containing the canonical relativistic Hamiltonian accompanied by a masslike anti-Hermitian Dirac operator, when the associat…
Pair density wave in quarter metals from a repulsive fermionic interaction in graphene heterostructures: A renormalization group study
Sk Asrap Murshed, Bitan Roy
Electronic bands in chirally stacked layer carbon-based honeycomb heterostructures, encompassing rhombohedral or ABC (), Bernal or AB bilayer (), and monolayer (…
Global phase diagram of two-dimensional dirty hyperbolic Dirac liquids
Christopher A. Leong, Daniel J. Salib, Bitan Roy
Within the framework of the canonical nearest-neighbor tight-binding model for spinless fermions, a family of two-dimensional bipartite hyperbolic lattices hosts massless Diraclike…
Charge density waves and stripes in quarter metals of graphene heterostructures
Sk Asrap Murshed, Bitan Roy
Motivated by recent experiments, here we identify valley-coherent charge density wave (VC-CDW) in the nondegenerate quarter metal for the entire family of chirally-stacked laye…
Zero modes and index theorems for non-Hermitian Dirac fermions
Bitan Roy
Dirac fermions, subject to external magnetic fields and in the presence of mass orders that assume topologically nontrivial spatial textures such as domain wall and vortices, for e…